尖叶铁扫帚 jian ye tie sao zhou

Hedysarum junceum Linnaeus f., Dec. Pl. Horti Upsal. 1: 7. 1762; Lespedeza cystoides Nakai; L. hedysaroides (Pallas) Kitagawa; L. hedysaroides var. subsericea (Komarov) Kitaga­wa; L. hedysaroides var. umbrosa (Komarov) Kitagawa; L. juncea var. subsericea Komarov; L. juncea f. umbrosa Kom­arov; Trifolium hedysaroides Pallas.

Subshrubs or perennial herbs, small, to 1 m tall, adpressed hairy throughout. Leaves 3-foliolate; petiole 0.5-1 cm; leaflets oblanceolate, linear-oblong, or narrowly oblong, terminal one 1.5-3.5 × 0.2-0.7 cm, base attenuate, margin slightly involute, apex acute or obtuse-rounded, mucronate. Racemes axillary, slightly overtopping leaves, 3-7-flowered. Calyx narrowly cam­panulate, 5-parted; lobes lanceolate, distinctly 3-veined after fruiting. Corolla white or yellowish; standard with purple spots at base, not or rarely reflexed at fruiting; keel mixed with purple at apex; standard and wings subequal to keel, sometimes stan­dard short. Cleistogamous flowers clustered in leaf axils, sub­sessile. Legume broadly ovoid, slightly overtopping persistent calyx, both surfaces adpressed white hairy. Fl. Jul-Sep, fr. Sep-Oct. 2n = 20.

Mountain slopes, thickets; below 1500 m. Gansu, Hebei, Hei­longjiang, Jilin, Liaoning, Nei Mongol, Shandong, Shanxi [Japan, Ko­rea, Mongolia, Russia (Far East, E Siberia)].